给TREEVIEW发送消息失败

Question

 HWND hWnd = ::FindWindow(_T("#32770"), _T("下载数据")); 
 if(hWnd)
 {
  HWND hButton = ::FindWindowEx(hWnd, NULL, NULL, _T("Tree1"));
  if(hButton)
  {
   NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)hButton;
    HTREEITEM hItem = (HTREEITEM)::SendMessage(hButton,TVM_GETNEXTITEM,TVGN_ROOT,0x0);
   
     ::SendMessage(hButton, TVM_SELECTITEM, TVGN_CARET, (LPARAM)&hItem);

Answer 1

跨进程？您是要给指定的窗口中的CTreeCtrl控件上某个指定的HTREEITEM模拟右键点击事件吗？

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Visual C++ enthusiast, like network programming and driver development. At present is being engaged in the WinCE/Windows Mobile platform embedded development.

Answer 2

// 模拟向其它进程窗口中的CTreeCtrl控件中的选中的节点项发送右键点击消息
HWND hWnd = ::FindWindow(NULL, _T("XX"));
 if(hWnd)
 {
  HWND hTreeView = ::FindWindowEx(hWnd, NULL, _T("SysTreeView32"), NULL);
  if(hTreeView)
  {
   DWORD pid = 0;
   ::GetWindowThreadProcessId(hTreeView, &pid);
   HANDLE hProcess = ::OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
   if(hProcess)
   {
    HTREEITEM hItem = TreeView_GetSelection(hTreeView); // 得到当前CTreeCtrl控件selected HTREEITEM

    RECT rc = {0};
    
    RECT* pRect = NULL;
    pRect = (RECT*)::VirtualAllocEx(hProcess, NULL, sizeof(RECT), MEM_COMMIT, PAGE_READWRITE);
    ASSERT(pRect);    
    DWORD dwWrite = 0;
    DWORD dwRead = 0;
    *(HTREEITEM*)&rc = hItem;
    ::WriteProcessMemory(hProcess, pRect, &rc, sizeof(RECT), &dwRead);
    LRESULT lResult = ::SendMessage(hTreeView, TVM_GETITEMRECT, FALSE, (LPARAM)pRect);
    BOOL bRet = ::ReadProcessMemory(hProcess, pRect, &rc, sizeof(RECT), &dwRead);

    POINT pt = {0};
    pt.x = rc.left + (rc.right - rc.left) / 2;
    pt.y = rc.top + (rc.bottom - rc.top) / 2;

    ::PostMessage(hTreeView, WM_RBUTTONDOWN, MK_RBUTTON, MAKELPARAM(pt.x, pt.y)); // 向CTreeCtrl发送WM_RBUTTONDOWN右键点击消息
    ::VirtualFreeEx(hProcess, pRect, sizeof(RECT), MEM_RELEASE);
    ::CloseHandle(hProcess);
   }
  }
 }

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Visual C++ enthusiast, like network programming and driver development. At present is being engaged in the WinCE/Windows Mobile platform embedded development.